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Expression of Cancer-Related Genes in Epstein Barr Virus-Infected Burkitt's Lymphoma Cell Line Treated with Mitomycin C.
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Original Article Expression of Cancer-Related Genes in Epstein Barr Virus-Infected Burkitt's Lymphoma Cell Line Treated with Mitomycin C.
Woo Bom Yeom, Seol Hee Park, Min Kyung Kim, Chul Hwan Kim, In Sun Kim, Dale Lee
Journal of Pathology and Translational Medicine 2001;35(4):271-277
DOI: https://doi.org/
Department of Pathology, College of Medicine, Korea University, Seoul 152-105, Korea. Yeom BW@kuccnx.korea.ac.kr
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BACKGROUND
Infection of Epstein Barr virus (EBV) into B cells drives the infected cells into the cell cycle and frequently results in lymphoblastoid cells. Mitomycin C inhibits DNA synthesis of epithelial cells as well as lymphoid cells by cross-linking with DNA. Many of the cancer cells have various pathways for escaping the responsiveness to the negative growth-regulatory effects of mitomycin C and gaining the immortalized property. The auther performed a cell culture of an EBV infected Jijoye lymphoma cell line, and compared the cell cycle and cancer related genes between the mitomycin treated- and non-treated group.
METHODS
DNA and RNA were extracted from the Jijoye cells; and EBV nuclear antigen (EBNA)-1, 2 and latent membrane protein (LMP) of EBV and p53 and p21 mRNA analyse was performed.
RESULTS
Mitomycin C blocked G2/M phase, however, mitomycin did not affect the expression of EBNA-1, 2 and LMP. Mitomycin C also increased the p21 mRNA expression without p53 mRNA increase.
CONCLUSIONS
Mitomycin C induces B cell apoptosis by blocking the G2/M phase and by increasing p21 mRNA independent to p53, which reveals the presence of an alternative pathway of p21 induction by mitomycin C in EBV positive lymphoma cells

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